Question

study the illustration. the small blue spheres represent water molecules.
in which direction will water molecules move across the membrane?
water will move from b to a.
there will be no net movement of water.
water will move from a to b.

Explanation:

Step1: Understand osmosis

Osmosis is the movement of water molecules from an area of higher water concentration to an area of lower water concentration across a semi - permeable membrane.

Step2: Compare water concentration in A and B

In the given illustration, area A has fewer water molecules (lower water concentration) and area B has more water molecules (higher water concentration).

Answer:

Water will move from B to A.